That's especially true of booming fields that are challenging for workers.That's especially true of booming fields that are challenging for workers这句话有什么句子成分?怎么理解

问题描述:

That's especially true of booming fields that are challenging for workers.
That's especially true of booming fields that are challenging for workers
这句话有什么句子成分?怎么理解

那确实是些对工人富有挑战的欣欣向荣的领域。

急速发展的领域真可谓是炙手可热,对普通员工来说确是个挑战

That's (主语+系动词)especially true of booming fields(表语) that are challenging for workers(定语从句)